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make ideal_alternatives a method of IdealAlternatives

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2022-11-11 11:31:34 +01:00
parent c83c8887c8
commit 4ac19a0016
1 changed files with 24 additions and 25 deletions
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11
src/topsis.rs
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@ -136,12 +136,10 @@ struct TopsisIdealAlternatives<const N_CRITERIA: usize> {
worst: [f64; N_CRITERIA], worst: [f64; N_CRITERIA],
} }
impl<const N: usize> TopsisIdealAlternatives<N> {
/// Compute the idealized alternatives from the given `matrix`. The `criteria` are required to know /// Compute the idealized alternatives from the given `matrix`. The `criteria` are required to know
/// if a critierion should be maximized or minimized. /// if a critierion should be maximized or minimized.
fn ideal_alternatives<const N: usize>( fn compute(matrix: &TopsisMatrix<N>, criteria: &TopsisCriteria<N>) -> Self {
matrix: &TopsisMatrix<N>,
criteria: &TopsisCriteria<N>,
) -> TopsisIdealAlternatives<N> {
let criteria = &criteria.0; let criteria = &criteria.0;
let mut best = [0.0; N]; let mut best = [0.0; N];
@ -164,7 +162,8 @@ fn ideal_alternatives<const N: usize>(
} }
} }
TopsisIdealAlternatives { best, worst } Self { best, worst }
}
} }
/// Scores the alternatives in `matrix` according to their similarity to the ideal worst /// Scores the alternatives in `matrix` according to their similarity to the ideal worst
@ -174,7 +173,7 @@ pub fn score_alternatives<const N: usize>(
matrix: &TopsisMatrix<N>, matrix: &TopsisMatrix<N>,
criteria: &TopsisCriteria<N>, criteria: &TopsisCriteria<N>,
) -> Result<Vec<f64>, Error> { ) -> Result<Vec<f64>, Error> {
let ideal_alternatives = ideal_alternatives(matrix, criteria); let ideal_alternatives = TopsisIdealAlternatives::compute(matrix, criteria);
let ideal_best = &ideal_alternatives.best; let ideal_best = &ideal_alternatives.best;
let ideal_worst = &ideal_alternatives.worst; let ideal_worst = &ideal_alternatives.worst;